An over-temperature protector

Abstract

The utility model provides a kind of over-temperature protector, including the shell of electrically conductive with the installation cavity of one end opening, the thermal response block being arranged at the installation cavity bottom, the electrically conductive contact piece being arranged in the installation cavity and being electrically connected with it, the first elastic member being arranged between the thermal response block and the electrically conductive contact piece, the opening is provided with insulating part, the contact lead that can be electrically connected with the electrically conductive contact piece is arranged on the insulating part, the second elastic member is arranged between the insulating part and the electrically conductive contact piece;It further includes the first lead-out wire, the second lead-out wire and the insulating shell led in the same direction;Wherein, the first lead-out wire is electrically connected on the opening side wall of the shell;The second lead-out wire is electrically connected on the contact lead;The insulating shell is sleeved on the shell outside.Two lead-out wires are led in the same direction, facilitate user installation and use, improve the satisfaction of end user.

Description

Technical Field

[0001] This utility model relates to the field of protector technology, and more specifically, to an over-temperature protector. Background Technology

[0002] Organic-type thermal fuses, also known as organic-type thermal circuit breakers, are commonly used for overheat protection in various household appliances, industrial equipment, automobiles, and electronic products. Existing technology, such as the utility model application with application number 201120504948.2, discloses a thermal circuit breaker device. When the block changes from a solid state to a liquid or gaseous state, the block no longer resists the biasing of the first and second biasing members, thereby causing the biasing members to relax and the contactor to disengage from the second conductor. In other words, when the equipment overheats, the first and second conductors separate, thus cutting off the circuit. However, it has the following shortcomings:

[0003] 1. The first and second conductors of this thermal fuse are in two directions on the same axis, which is inconvenient for users to install and use;

[0004] 2. The outer casing of this thermal fuse is usually made of metal sheet by machine stamping. The metal casing is electrified, which makes it inconvenient to install and use the whole machine. At the same time, the electrified metal casing poses certain installation and use risks.

[0005] 3. During machine operation, the temperature sensed by the thermal fuse is greatly affected by factors such as the installation location, tightness of installation, quality of insulation materials, and heat exchange environment. In practical applications, it is not easy to install the first and second conductors in two directions on the same axis in an appropriate position, which can easily cause inconsistencies in the temperature sensed by the thermal fuse and reduce the over-temperature protection effect of the thermal fuse. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide an over-temperature protector to solve the above problems.

[0007] The present invention adopts the following solution:

[0008] This application provides an over-temperature protector, comprising a housing with a mounting cavity having an opening at one end that conducts electricity, a thermal response block disposed at the bottom of the mounting cavity, a conductive contact disposed within the mounting cavity and electrically connected thereto, a first elastic member disposed between the thermal response block and the conductive contact, an insulating member disposed at the opening, a contact lead disposed on the insulating member that conducts electricity with the conductive contact, and a second elastic member disposed between the insulating member and the conductive contact.

[0009] It also includes a first lead wire, a second lead wire, and an insulating shell extending in the same direction; wherein, the first lead wire is electrically connected to the opening sidewall of the shell; the second lead wire is electrically connected to the contact lead wire; and the insulating shell is fitted over the shell.

[0010] Furthermore, a welding piece is provided on the outer wall of the opening end of the housing, which is welded to the first lead wire.

[0011] Furthermore, it also includes a thermistor, the two ends of which are connected to the welding piece and the first lead wire, respectively.

[0012] Furthermore, a disc-shaped element is provided between the conductive contact and the first elastic element.

[0013] Furthermore, the conductive contact includes a disc-shaped body with a horizontal contact surface and a spring sheet disposed on the outer periphery of the disc-shaped body, which is elastically electrically connected to the inner wall of the housing.

[0014] Furthermore, a head is provided between the conductive contact and the contact lead, one end of which forms a contact surface for conductive contact with the conductive contact, and the other end forms a protrusion for electrical contact with the contact lead; the second elastic member is disposed between the head and the insulating member.

[0015] Furthermore, the insulating element is a ceramic pillar.

[0016] Furthermore, the open end of the insulating shell is sealed with resin.

[0017] Furthermore, the outer casing is a plastic casing or a ceramic casing.

[0018] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0019] 1. Both leads extend in the same direction, making installation and use easier for users and improving end-user satisfaction;

[0020] 2. An insulating outer shell is configured outside the conductive housing. During installation, users do not need to install additional insulating materials such as heat shrink tubing or fiberglass tubing, saving users assembly material and labor costs and further improving end-user satisfaction.

[0021] 3. An internal NTC temperature sensor can be installed. During operation, the temperature of the over-temperature protector can be detected and displayed in real time, allowing for flexible adjustment of the heating current and heating time, thus improving the machine's performance. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic cross-sectional view of an over-temperature protector according to an embodiment of the present invention. Figure 1 ;

[0024] Figure 2 This is a schematic cross-sectional view of an over-temperature protector according to an embodiment of the present invention. Figure 2 ;

[0025] Icons: 1. Housing; 2. Mounting cavity; 3. Thermal response block; 4. Conductive contact; 5. First elastic element; 6. Insulating element; 7. Contact lead; 8. Second elastic element; 9. First lead; 10. Second lead; 11. Insulating shell; 12. Head; 13. Welding piece; 14. Thermistor; 15. Disc-shaped component. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Example

[0028] Combination Figure 1 and Figure 2As shown, this embodiment provides an over-temperature protector, including a housing 1 with a conductive mounting cavity 2 having an opening at one end, a thermal response block 3 disposed at the bottom of the mounting cavity 2, a conductive contact 4 disposed within the mounting cavity 2 and electrically connected thereto, a first elastic member 5 disposed between the thermal response block 3 and the conductive contact 4, an insulating member 6 disposed at the opening, a contact lead 7 disposed on the insulating member 6 capable of making conductive contact with the conductive contact 4, and a second elastic member 8 disposed between the insulating member 6 and the conductive contact 4;

[0029] It also includes a first lead wire 9, a second lead wire 10, and an insulating shell 11 extending in the same direction; wherein, the first lead wire 9 is electrically connected to the opening sidewall of the shell 1; the second lead wire 10 is electrically connected to the contact lead wire 7; and the insulating shell 11 is sleeved on the outside of the shell 1.

[0030] Specifically, in this embodiment, the housing 1 is a conductive metal housing 1, which forms the mounting cavity 2 with one end open; the thermal response block 3 is placed at the bottom of the mounting cavity 2. In this embodiment, the thermal response block 3 is an organic pressing block, which can melt when the temperature meets or exceeds the rated operating temperature. The conductive contact 4 includes a disc-shaped body with a horizontal contact surface, and a spring sheet disposed on the outer periphery of the disc-shaped body, which provides elastic electrical contact with the inner wall of the housing 1. A disc-shaped member 15 is disposed between the conductive contact 4 and the first elastic member 5. In this embodiment, the disc-shaped member 15 is a circular piece, which makes surface contact with the disc-shaped body to ensure that the conductive contact 4 is uniformly stressed.

[0031] In this embodiment, the insulating member 6 is a ceramic pillar, and the contact lead 7 is disposed at the center of the ceramic pillar, with one end protruding into the mounting cavity 2. A head 12 is provided between the conductive contact 4 and the contact lead 7, one end of which forms a contact surface for conductive contact with the conductive contact 4 to ensure full contact with the disc-shaped body of the conductive contact 4; the other end forms a protrusion for electrical contact with the contact lead 7; the second elastic member 8 is disposed between the head 12 and the insulating member 6. The first elastic member 5 and the second elastic member 8 are springs.

[0032] Under normal conditions, under the action of the first elastic element 5 and the second elastic element 8, the contact lead 7 makes electrical contact with the conductive contact 4 through the head 12, and then contacts the housing 1, thereby making the first lead 9 and the second lead 10 electrical conductors. However, when the temperature meets or exceeds the rated operating temperature, the thermal response block 3 melts, causing the first elastic element 5 to lose its bottom support and thus no longer exert elastic force on the conductive contact 4. Under the push of the second elastic element 8, the head 12 moves the conductive contact 4 away from the contact lead 7, and the head 12 disconnects the electrical connection with the contact lead 7, thereby disconnecting the electrical connection between the first lead 9 and the second lead 10.

[0033] In this embodiment, a welding piece 13 is provided on the outer wall of the open end of the housing 1, which is welded to the first lead 9, and the second lead 10 is electrically connected to the contact lead 7. The first lead 9 and the second lead 10 extend in the same direction, which facilitates user installation and use and improves end-user satisfaction. At the same time, the first lead 9 and the second lead 10 extending in the same direction make it easier to install in a suitable position in practical applications, avoiding inconsistencies in the temperature sensed by the thermal fuse, thereby improving the over-temperature protection effect of the thermal fuse.

[0034] In other embodiments, such as Figure 2 As shown, it also includes a thermistor 14, whose two ends are connected to the welding piece 13 and the first lead 9, respectively. By setting the thermistor 14, the temperature of the over-temperature protector can be detected and displayed in real time during operation, allowing for flexible adjustment of the heating current and heating time, thus improving the machine's performance.

[0035] The insulating shell 11 is a plastic or ceramic shell, and its open end is sealed with resin. With the insulating shell 11 installed, users do not need to assemble additional insulating materials such as heat-shrink tubing or fiberglass tubing during installation, saving users assembly material and labor costs and further improving end-user satisfaction.

[0036] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions that fall within the scope of this utility model's concept are protected by this utility model.

[0037] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

Claims

1. An over-temperature protector, comprising a housing (1) having a conductive mounting cavity (2) with an opening at one end, a thermal response block (3) disposed at the bottom of the mounting cavity (2), a conductive contact (4) disposed within the mounting cavity (2) and electrically connected thereto, a first elastic member (5) disposed between the thermal response block (3) and the conductive contact (4), an insulating member (6) disposed at the opening, a contact lead (7) disposed on the insulating member (6) capable of making conductive contact with the conductive contact (4), and a second elastic member (8) disposed between the insulating member (6) and the conductive contact (4); characterized in that: It also includes a first lead wire (9), a second lead wire (10) extending in the same direction, and an insulating shell (11); wherein the first lead wire (9) is electrically connected to the opening sidewall of the shell (1); the second lead wire (10) is electrically connected to the contact lead wire (7); and the insulating shell (11) is fitted over the shell (1).

2. The over-temperature protector according to claim 1, characterized in that, A welding piece (13) is provided on the outer wall of the opening end of the housing (1), which is welded to the first lead wire (9).

3. The over-temperature protector according to claim 2, characterized in that, It also includes a thermistor (14), whose two ends are connected to the welding piece (13) and the first lead (9), respectively.

4. The over-temperature protector according to claim 1, characterized in that, A disc-shaped member (15) is provided between the conductive contact (4) and the first elastic member (5).

5. The over-temperature protector according to claim 1, characterized in that, The conductive contact (4) includes a disc-shaped body with a horizontal contact surface and a spring sheet disposed on the outer periphery of the disc-shaped body, which is elastically electrically connected to the inner wall of the housing (1).

6. The over-temperature protector according to claim 1, characterized in that, A head (12) is provided between the conductive contact (4) and the contact lead (7), one end of which forms a contact surface that makes conductive contact with the conductive contact (4), and the other end forms a protrusion that makes electrical contact with the contact lead (7); the second elastic member (8) is provided between the head (12) and the insulating member (6).

7. The over-temperature protector according to claim 1, characterized in that, The insulating component (6) is a ceramic pillar.

8. The over-temperature protector according to claim 1, characterized in that, The opening of the insulating shell (11) is sealed with resin.

9. The over-temperature protector according to claim 1, characterized in that, The outer casing is a plastic casing or a ceramic casing.

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